爆炸载荷下正弦曲边三维负泊松比夹芯板的动态响应和吸能特性

蒋舟顺; 徐峰祥; 邹震; 周谦谋

doi:10.11883/bzycj-2023-0214

爆炸载荷下正弦曲边三维负泊松比夹芯板的动态响应和吸能特性

doi: 10.11883/bzycj-2023-0214

蒋舟顺^{1, 2,},
徐峰祥^{1, 2, ,},
邹震^{1, 2},
周谦谋^{1, 2}

1.
武汉理工大学现代汽车零部件技术湖北省重点实验室，湖北武汉 430070
2.
武汉理工大学汽车零部件技术湖北省协同创新中心，湖北武汉 430070

基金项目: 国家自然科学基金（51975438）；高等学校学科创新引智计划（B17034）

详细信息

作者简介:
蒋舟顺（1998－　），男，硕士研究生，17607249599@163.com

通讯作者:
徐峰祥（1985－　），男，博士，副教授，xufx@whut.edu.cn

中图分类号: O347
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- 文章访问数: 151
- HTML全文浏览量: 85
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- 被引次数: 0
出版历程
- 收稿日期: 2023-06-16
- 修回日期: 2023-10-24
- 网络出版日期: 2023-12-03
- 刊出日期: 2024-02-06

Dynamic response and energy absorption properties of sinusoidally curved three-dimensional negative Poissonʼs ratio sandwich panels subjected to blast loading

JIANG Zhoushun^{1, 2
,},
XU Fengxiang^{1, 2
, ,},
ZOU Zhen^{1, 2},
ZHOU Qianmou^{1, 2}

1.
Hubei Key Laboratory of Advanced Technology of Automotive Components, Wuhan University of Technology, Wuhan 430070, Hubei, China
2.
Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070, Hubei, China

摘要

摘要: 具有优异能量吸收特性的负泊松比结构在抗爆炸冲击防护领域有广阔的应用前景。为进一步提升夹芯板的抗爆性能，提出了一种在X、Y方向力学特性相同的正弦曲边三维负泊松比夹芯板用于防爆保护。采用数值模拟方法，对夹芯板在空爆载荷下的动态响应和吸能特性进行了研究，分析了夹芯板塑性拉伸和弯曲对背面板变形模式和轴向偏转分布的影响，并探究了爆炸距离、炸药质量、面板厚度和芯层关键结构参数对夹芯板变形和能量吸收的影响。结果表明，在空爆载荷下，夹芯板的动态响应过程可分为芯层压缩、整体变形和自由振动3个阶段。后面板在纵向（X方向）和横向（Y方向）上的抗变形能力无明显差异。随着炸药质量增加和爆炸距离减小，夹芯板的后面板中心位移增加，芯层吸能占比减小。此外，采用薄前面板和厚后面板的夹芯板可以提高芯层的吸能占比。当分别增加相同的前、后面板厚度时，前面板厚度对减小后面板中心位移的影响更显著。当芯层厚度从0.6 mm减小至0.2 mm时，后面板中心位移减小49.0%，总能量吸收增加86.7%；芯层振幅从0.2 mm增大至1.0 mm时，后面板中心位移减小20.7%，总能量吸收大致不变；芯层高度从10 mm增大至18 mm时，后面板中心位移减小88.3%，总能量吸收增加56.9%；芯层宽长比从0.56减小至0.2时，后面板中心位移减小39%，总能量吸收增加47.4%。
- 三维负泊松比结构 /
- 夹芯板 /
- 抗爆性能 /
- 能量吸收
Abstract: The remarkable energy absorption properties of the negative Poissonʼs ratio structure offer extensive prospects for applications in blast protection. However, the existing in-plane configurations of two-dimensional auxetic honeycomb cores always represent anisotropic behavior. To further enhance the blast resistance of sandwich panels, a three-dimensional sinusoidal curved-edge sandwich panel with a negative Poissonʼs ratio effect in both the X and Y directions for blast protection was proposed. The dynamic response and energy absorption characteristics under air blast load were studied by numerical simulation. Deformation modes and axial deflection distribution caused by plastic stretching and bending of the back face sheet were investigated in detail. The effects of stand-off distance (SOD), explosive mass, panel thickness, and key geometric parameters of the core layer on deformation and energy absorption were discussed. The results show that the dynamic response process of the sandwich panel can be divided into three stages: core compression, overall deformation, and free vibration. Moreover, it is found that there is no significant difference in the ability to resist deformation of the sandwich structure along the longitudinal (X) and transverse (Y) directions. As the TNT mass increases and the SOD decreases, the central displacement of the back face sheet of the sandwich panel increases, leading to a decrease in the energy absorption ratio of the core layer. Furthermore, utilizing a sandwich panel with a thin front panel and a thick back panel can increase the energy absorption proportion of the core layer. When increasing the thickness of the front and back panels by the same amount, the thickness of the front panel has a more significant effect on reducing the center displacement of the back panel. When the core thickness decreases from 0.6 mm to 0.2 mm, the back panel center displacement decreases by 49.0%, and the total energy absorption increases by 86.7%. As the core amplitude increases from 0.2mm to 1.0mm, the back panel center displacement decreases by 20.7%, with the total energy absorption remaining roughly constant. With an increase in core height from 10mm to 18mm, the back panel center displacement decreases by 88.3%, and the total energy absorption increases by 56.9%. Furthermore, a decrease in core aspect ratio from 0.56 to 0.2 results in a 39% reduction in back panel center displacement and a 47.4% increase in total energy absorption. The results of this study can guide the design of energy-absorbing protection for sandwich panels.
- three-dimensional negative Poisson’s ratio structure /
- sandwich panels /
- blast resistance /
- energy absorption

HTML全文

图 1 具有负泊松比效应的正弦曲边蜂窝

Figure 1. Sinusoidal curved honeycomb with negative Poissonʼs ratio effect

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图 2 爆炸载荷下三维负泊松比夹芯板数值模型（1/4模型）

Figure 2. A numerical model of 3D negative Poisson’s ratio sandwich panels under blast loading (1/4 of the model)

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图 3 数值模拟得到的不同网格尺寸下后面板中心点位移

Figure 3. Numerically-simulated central displacement-time curves of the back face sheet under different mesh sizes

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图 4 正六边形蜂窝夹芯板和胞元结构示意图^[37]

Figure 4. Schematic diagrams of the regular hexagonal honeycomb sandwich panel and cell structure^[37]

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图 5 蜂窝夹芯板变形模式数值模拟结果与实验结果的对比 (S4-1)^[37]

Figure 5. Comparison between numerical simulation results and experimental results of deformation patterns of the honeycomb sandwich panel (S4-1)^[37]

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图 6 实验和数值预测的后面板最终中心点位移比较

Figure 6. Comparison of the final center point displacement of the back face sheet between experimental and numerical predictions

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图 7 数值模拟得到的蜂窝夹芯板S4-1中各能量的时间曲线

Figure 7. Numerically-simulated energy history curves of the honeycomb sandwich panel S4-1

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图 8 前后面板中心的速度和位移以及芯层压缩量随时间的变化

Figure 8. Central velocity-time curves of the front and back face sheets as well as central displacement-time curves of the front and back face sheets, and core compression

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图 9 夹芯板在不同时刻的Z向位移云图

Figure 9. Contours of the Z-direction displacement of the sandwich panel at different times

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图 10 不同时刻前后面板距中心点不同距离处的位移分布

Figure 10. Displacement distribution of the front and back face sheets at different distances from the mid-point at different times

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图 11 后面板上选点的具体位置

Figure 11. Locations of the selected points on the back face sheet

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图 12 后面板上点的位移

Figure 12. Locations of the selected points on the back face sheet

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图 13 不同炸药质量下前后面板的中心位移和中心芯层压缩量对比

Figure 13. Comparison of central displacements of front and back face sheets and center core compression under different explosive masses

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图 14 不同炸药质量下后面板中心位移时间曲线

Figure 14. Center point displacement-time curves of back face sheets under different explosive masses

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图 15 不同炸药质量下夹芯板不同部件的能量吸收和芯层吸能在总吸能中的占比

Figure 15. Energy absorption of different parts of sandwich panel and core energy absorption percentages in the total energy absorption under different explosive masses

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图 16 不同炸药质量下夹芯板的变形分布

Figure 16. Deformation distributions of sandwich panels under different explosive masses

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图 17 不同爆距下的前后面板中心位移和芯层压缩量对比

Figure 17. Comparison of central displacements of front and back face sheets and center core compressionunder different stand-off distances

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图 18 不同爆距下夹芯板不同部件的能量吸收和芯层吸能在总吸能中的占比

Figure 18. Energy absorption of different parts of sandwich panel and core energy absorption percentages in the total energy absorption under different stand-off distances

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图 19 不同前后面板厚度下前后面板的中心位移

Figure 19. Central displacements of front and back face sheets with different thicknesses

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图 20 不同前后面板厚度下各部件的能量吸收

Figure 20. Energy absorption of each component under different front and back face sheet thicknesses

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图 21 不同芯层厚度和振幅下前后面板的中心位移

Figure 21. Central displacements of front and back face sheets with different core thicknesses and amplitudes

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图 22 不同芯层厚度和振幅下各部件的能量吸收

Figure 22. Energy absorption of each component under different core thicknesses and amplitudes

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图 23 不同振幅和不同宽长比下夹芯板的Z向位移云图

Figure 23. Displacement contours in the Z direction for sandwich panels with different amplitudes and aspect ratios

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图 24 不同胞元高度和宽长比下前后面板的中心位移

Figure 24. Central displacements of front and back face sheets under different cell heights and aspect ratios

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图 25 不同胞元高度和宽长比下各部件的能量吸收

Figure 25. Energy absorption of each component under different cell heights and aspect ratios

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图 26 3种蜂窝夹芯板的芯层结构和胞元结构示意图

Figure 26. Schematic diagrams of core layer structure and cell structure for three sandwich panels

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图 27 4种不同夹芯板的背面板的中心位移时间曲线

Figure 27. Central displacement-time curves of back face sheets of four different honeycomb sandwich panels

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表 1 数值模拟中采用的铝合金主要材料参数^[37]

Table 1. Main material parameters of aluminum alloy used in numerical simulation^[37]

部件	材料	屈服应力/MPa	拉伸强度/MPa	杨氏模量/GPa	密度/(g·cm⁻³)	泊松比
面板	AL1200	140	160	70	2.7	0.3
芯层	AL5052	70	210	70	2.7	0.3

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表 2 爆炸载荷下三维负泊松比夹芯板设计方案

Table 2. Designs of 3D negative Poisson’s ratio sandwich panels subjected to blast loading

编号	T_f/mm	T_b/mm	A/mm	L₂/mm	爆炸距离/mm	Q/g	拉伸宽度L₄/mm
A-1	1.2	1.2	1	10	100	20	5
Q-30	1.2	1.2	1	10	100	30	5
Q-40	1.2	1.2	1	10	100	40	5
S-80	1.2	1.2	1	10	80	20	5
S-120	1.2	1.2	1	10	120	20	5

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表 3 4组夹芯板的几何参数和爆炸参数^[37]

Table 3. Geometric and explosion parameters for four sets of sandwich panels^[37]

夹芯板	L₂/mm	蜂窝边长L₁/mm	T_c/mm	Q/g	爆炸距离/mm
S4-1	18.4	5	0.04	10	150
S4-2	18.4	5	0.04	10	100
S3-1	18.4	3	0.04	15	100
S3-2	18.4	3	0.04	20	130

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表 4 3种夹芯板的几何信息和模拟结果

Table 4. Geometric information and simulation results for three sandwich panels

编号	胞元长度 L₁/mm	胞元高度 L₂/mm	胞元夹角 θ/(°)	胞元厚度 T_c/mm	夹芯板总质量 M/g	背面板中心最终位移D_b/mm	结构总能量吸收E/J	比吸能 e/(J·g⁻¹)
C-1	10	10	−	0.2	211.64	6.58	382.6	1.81
C-2	10	10	120	0.2	257.66	8.67	316.1	1.23
C-3	5.77	10	120	0.2	229.13	10.4	256.6	1.12
C-4	5.77	10	120	0.2	226.20	11.4	236.3	1.04

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